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(a) What is an operon ? (b) Explain...

(a) What is an operon ?
(b) Explain how a polycistronic structural gene is regulated by a common promoter and a combination of regulatory genes in a lac- operon.

A

A common promoter and operator genes

B

Promotor gene only

C

A common promoter and regulatory genes

D

Regulatory gene only

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The correct Answer is:
C
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AAKASH INSTITUTE ENGLISH-MOCK TEST 35-EXAMPLE
  1. Read the following statements ,(a). A péptide bond is formed between C...

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  2. In eukaryotes, the first level of regulation of gene expressionis

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  3. (a) What is an operon ? (b) Explain how a polycistronic structura...

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  4. Which of the following genes provides attachment site for RNA polymera...

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  5. The structural gene that codes for transacetylase enzyme which can tra...

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  6. Regulation of lac operon by repressor is called

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  7. Number of structural genes in tryptophan operon is

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  8. The predominant-site for control of gene expression in prokaryotes is

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  9. Human genome consists of approximately

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  10. The number of genes found in chromosome 1 and Y-chromosome fo human be...

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  11. What percentage of human genome codes for proteins?

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  12. Which of the following DNA segments have 1-6 bp length?

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  13. Read the following statements w.r.t. lac operon. a. lac-i is the con...

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  14. The basis of DNA fingerprinting is

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  15. Which of the following techniques is used for separation of DNA fragme...

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  16. Which of the following methods is involved in identifying all genes th...

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  17. Which of the following is a non-infectious disease?

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  18. Find the Incorrect match between disease and its vector.

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  19. Which of the following organism affect the lymphatic vessels in human ...

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  20. match the following columns and select the correct option Column-I C...

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